Driving mechanism for treadle-operated machines.



F. J. OSIUS.

DRIVING MECHANISM FOR TREADLE OPERATED MACHINES.

APPLICATION FILED MN.8.1915.

1,226,804. Patented May 22, 1917.

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II /W F. I. OSIUS.

DRIVING MECHANISM FOR TREADLE OPERATED MACHINES.

APPLICATION FILED JAN. 8, 1915.

1 ,226,804. Patented May 22, 191-7.

2 SHEETS-SHEET 2- I ii A TTUFPNC Y5.

W/T/VC 55E 5 FREDERICK J'. OSIUS, OF BACINE, WISCONSIN.

DRIVING MECHANISM FOR TBEADLE-OPEBATED MACHINES.

Specification of Letters Patent.

Patented May 22, 1917.

- Application 111m January 8, 1915. Serial No. 1,078.

To all whom it may concern:

Be it known that I, FREDERICK J. Osros, a citizen of the United States, and. resident of Racine, county of Racine, and State of Wisconsin, have invented new and useful Improvements in Driving Mechanism for Treadle-Operated Machines, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The invention relates to a driving mech-' anism comprising an electric motor which is adapted to be attached to a treadle operated machine, such as an'ordinary sewing machine.

The invention further designs to provide a driving mechanism for a treadle operated machine in which the motor is secured to the machine itself and in driving connection with the hand wheel thereof and whose operation is controlled by means connected to the treadle of the machine.

The invention further designs to provide means for holding the driving wheel of the motor in yielding engagement with the driven wheel of the machine.

The invention further designs to provide means for controlling the operation of the motor which consists of a rheostat or a brush control either one of which is adapted to be operated by means connected to it'and to the treadle of the machine.

The invention further designs to provide -a new and improved form of driving mechanism for a treadle operated machine.

The invention consists in the several features hereinafter set forth and more particularly defined by claims at the concluslon hereof.

In the drawings, Figure l is an end elevation of a sewing machine of usual construction with the driving mechanism thereon (parts of the sewing machine being shown in section) Fig. 2 is a plan view of the device embodying the invention; Fig. 3 is a side elevation thereof; Fig. 4 is a section taken on the line 4-4 of Fig. 3; Fig. 5 is a section taken on the line 55 of Fig. 1; Fig. 6 is a section taken on the line 66 of Fig.5; Fig. 7 is a section taken on the line 77 of Fig. 1; Fig. 8 is an end elevation of the attachment showing the brush control (parts of the sewing machine being shown in section) Fig. 9 is a plan view of this modified construction; Fig. 10 is a section taken on the line 10-10 of Fig. 8;

Fig. 11 is a section taken on the line 11-11 of Fig. 9; and Fig. 12 is a detail sectional new of the driving wheel of the motor.

The invention comprises an electric motor 12 of ordinary construction having an armature' shaft 13 upon which a grooved friction pulley 14 having a peripheral portion 14 preferably of cork is mounted which is adapted to register with the hand wheel 15 of the machine 16, means for maintaining the'driving wheel of the motor in yielding engagement with the driven wheel of the machine, means for controlling the operation of the motor and means connected to the controlling means and to the treadle of the machine for operating said controlling means.

The means for supporting the motor 12 upon the frame of the machine comprises a bracket 17 pivotally connected to the frame of the machine and having a pin proextending outwardly from the sleeve and provided with a handle 24. The bracket 17 is provided with a series of upstanding projecting teeth 25 which the extension 23 is adapted to engage to thereby vary the tension of the spring 21 and thus form an adjustable yielding connection between the motor 12 and the hand wheel 15. In Fig. 10 my preferred form of bracket is shown comprising a block 26, a pin 26 similar to the pin 18, a band 27 adapted to extend around the upright member of the machine frame and having one end 28 looped over and secured in an aperture 29 in the block 26, the other end being provided with a screw 3 which is adapted to be inserted in an aperture in the, block 26 and be secured thereto by a wing nut 31 whereby the turning up of the wing nut vary the length of the band 27 and rigidly secure it to the upright member of the frame 16 of the machine. The block 26 has projections 25 similar to the projections 25 which are adapted to be engaged by the extension 23.

It will thus be noted that either one of the brackets will suitably support the moon the bolt 30 will tor in position upon the machine frame, that the spring 21 being connected at one end to the motor and that the other end ad ustably connected with the bracket w1ll form a yielding connection between the drive wheel of the motor and the driven Wheel of the machine.

The means in the first instance for controlling the operation of the motor comprises a rheostat 32 having a swlnglng contact member 33 pivotally connected thereto at its end 34 and provided with spring retaining means 35. The contact arm is adapted to travel over contact plates 36 to cut in or out the resistances in circuit with the line connected to the motor.

The means in the second instance comprises rotary brushes 37 which are mounted upon a disk 38 surrounding the armature 39 which disk is yieldingly connected to the casing of the motor 12 by a coiled spring 40. The ends 41 of each of the brushes are adapted to register with the contact plates 42 on the armature and by advancing the brushes from vertical to horizontal position the flux through the armature is increased and the speed thereby is increased in the usual manner.

The means for operating either therheostat or brush control comprises a rod 43 0on nected at one end to an eyed member 44 on the rheostat arm 33 or an eyed member 45 on the brush 37, the other end of said member being connected to one end of a spring 46, the other end of the spring 46 being connected to one end of a rod 47, the other end of said rod being connected to a hook-shaped bracket 48 through the aperture 49 therein, the hook portion of the bracket engaging one of the usual treadle members 50 of the machine and being locked in position by a set screw 51 in threaded engagement with the bracket and engaging the treadle member. Only limited movement of the treadle and a limited rocking movement of the fl wheel of the machine is permitted by a cham 52 connected to the frame of the machine and to a spring 53 which in turn is connected with the bracket 48.

The operation of the device is as follows: The current is turned on through the line including the motor in the ordinary manner and in the case of the rheostat the operator presses down upon the treadle in the usual manner as if operating the machine whereupon the rod 47 spring 46 and rod 43 will be moved downwardly carrying the contact arm 33 therewith to gradually cut out or insert the resistances in the circuit to speed up or decrease the speed of the motor. When the brush is employed the downward movement of the rod 47, spring 46 and rod 43 will cause the brushes to assume a horizontal position to speed up the motor and it is obvious that in either case the control may be so positioned by the operation of the treadle as to increase or decrease the speed of the motor and thereby increase or decrease the speed of the sewing machine to which it is attached or to stop the operation of the motor and consequently that of the machine. i

The invention thus exemplifies a mechanism for driving a treadle-operated machine comprising a motor mounted upon the frame of the machine and in operative relation with the driven wheel of the machine, means for controlling the speed of the motor and operating means connected to said controlling means and to the treadle of the machine whereby the operator may control the motor through the operation of the treadle mechanism.

The invention is not to be restricted to the details of construction herein set forth but may be varied so as to be within the scope of the appended claims.

What I claim as my invention is 1. The combination, with a machine having a wheel to be driven, of an electric motor including a frame and a driving wheel, a support secured to the frame of the machine and having an upstanding projection thereon, a sleeve on the motor-frame surrounding said projection to swingingly mount said motor on said support to bring said drive wheel into driving engagement with said driven wheel, and a spring connected to said sleeve and to said support to yieldingly maintain said wheels in driving relation.

2. The combination, with a machine having a wheel .to be driven, of a support secured to the frame of the machine, an electric motor provided with a drive wheel and mounted on said support to move in a substantially horizontal plane to bring said drive wheel into frictional driving engagement with said driven wheel, and a spring secured to said motor and adjustably secured to said support for yieldingly maintaining said wheels in driving relation.

3. The combination, with a machine having a wheel to be driven, of a support secured to the frame of the machine, an electric motor provided with a drive wheel and swin'gingly mounted on said support to bring said drive wheel into frictional engagement with said driven wheel, a spring for yieldingly maintaining said wheels in driving relation, and means on said support for securing said spring in different positions of ad ustment.

4. The combination, with a machine having a wheel to be driven, of a support secured to the machine, an electric motor provided with a drive wheel and revolubly mounted on said support to bring said drive wheel into frictional engagement with said driven wheel, and a spring secured at one end to the motor for yieldingly maintaining said wheels in driving relation, said support having a plurality of locking recesses therein, the other end of said spring being adapted to be held in any of said looking recesses.

5. The combination, with a machine having a Wheel to be driven, of a support, means comprising a band for removably clamping said support to the machine, an electric motor swingingly mounted on said support and provided with a drive Wheel for frictional engagement with said driven wheel, and means for yieldingly maintaining said wheels in driving relation.

6. The combination, with a machine having a wheel to be driven, of a support detachably secured to the frame of the machine, an electric motor provided with a drive Wheel and mounted on said support to move in a substantially horizontal plane to bring the periphery of said drive wheel into driving engagement with the periphery of said driven wheel, and means for automatically yieldingly maintaining said wheels in driving relation.

7. The combination, with a machine having a wheel to be driven, of a support detachably secured to the frame of the machine and having an upstanding projection thereon, a motor horizontally swingingly mounted upon said support and projection so as to bring the periphery of its drive Wheel into engagement with the periphery of said driven wheel, and means for automatically yieldingly maintaining said Wheels in driving relation.

In testimony whereof, I affix my signature, in presence of two witnesses.

FREDERICK J. OSIUS.

Witnesses C: H. KEENEY, EMHJY 'SCHOWALTER. 

